What caused the price drop compared to BTC. On July 17th it was over 0.07btc and now just 3 days later it is 0.062btc. That's more then 10%. USD comparison is not what I look at.
Just remember bitcoin is the king of cryptocurrencies, if price of bitcoin goes up the alternative coins goes down, if price of bitcoin goes down the alternative coins goes down and if price of bitcoin is stable the alternative coins goes up. That's patern of trading alternative coins 
believe in it or not, you can make your own analysis of the market.